A3967SLB Allegro Microsystems Inc, A3967SLB Datasheet
A3967SLB
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A3967SLB Summary of contents
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Features and Benefits ▪ ±750 mA output rating ▪ Satlington® sink drivers ▪ Automatic current-decay mode detection/selection ▪ 3.0 to 5.5 V logic supply voltage range ▪ Mixed, fast, and slow current-decay modes ▪ Internal UVLO and thermal ...
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... A3967 Selection Guide Part Number A3967SLBTR-T 24-pin SOIC with internally fused pins Absolute Maximum Ratings Characteristic Symbol Load Supply Voltage V BB Logic Supply Voltage V CC Logic Input Voltage Range V IN Sense Voltage V SENSE Reference Voltage V REF Output Current I OUT Package Power Dissipation ...
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A3967 ELECTRICAL CHARACTERISTICS at T noted) Characteristic Output Drivers Load Supply Voltage Range Output Leakage Current Output Saturation Voltage Clamp Diode Forward Voltage Motor Supply Current Control Logic Logic Supply Voltage Range Logic Input Voltage Logic Input Current Maximum STEP ...
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A3967 ELECTRICAL CHARACTERISTICS (continued otherwise noted) Characteristic Control Logic (cont’d) Mixed Decay Trip Point Ref. Input Voltage Range Reference Input Impedance Gain (G ) Error m (note 3) Thermal Shutdown Temp. Thermal Shutdown Hysteresis UVLO Enable Threshold UVLO ...
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A3967 Device Operation. The A3967 is a complete microstep- ping motor driver with built in translator for easy operation with minimal control lines designed to operate bipolar stepper motors in full-, half-, quarter- and eighth-step modes. The current ...
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A3967 RC Blanking. In addition to the fi xed off-time of the PWM control circuit, the C component sets the compara- T tor blanking time. This function blanks the output of the current-sense comparator when the outputs are switched by ...
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A3967 ( Minimum Command Active Time Before Step Pulse (Data Set-Up Time) ..... 200 ns B. Minimum Command Active Time After Step Pulse (Data Hold Time) ........... 200 ns C. Minimum STEP Pulse Width ...................... 1.0 μs D. ...
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A3967 Layout. The printed wiring board should use a heavy ground plane. For optimum electrical and thermal performance, the driver should be soldered directly onto the board. The load supply terminal with an electrolytic capacitor (>47 μF is ...
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A3967 Full Step Half Step Microstepping Driver with Translator Table 2. Step Sequencing Home State = 45º Step Angle, DIR = H Phase 1 Current ¼ Step Step ...
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A3967 STEP INPUT 70.7% PHASE 1 CURRENT –70.7% 70.7% PHASE 2 CURRENT –70.7% Microstepping Driver with Translator Full Step Operation DIR = SLOW DECAY SLOW DECAY The vector addition of the output ...
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A3967 STEP INPUT 100% 70.7% PHASE 1 CURRENT –70.7% –100% 100% 70.7% PHASE 2 CURRENT –70.7% –100% The mixed-decay mode is controlled by the percent fast decay voltage (V age at the PFD input is greater than 0.6V age on ...
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A3967 STEP INPUT 100% 70.7% 38.3% PHASE 1 CURRENT –38.3% –70.7% –100% 100% 70.7% 38.3% PHASE 2 CURRENT –38.3% –70.7% –100% The mixed-decay mode is controlled by the percent fast decay voltage (V voltage at the PFD input is greater ...
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A3967 STEP INPUT 100% 70.7% 38.3% PHASE 1 CURRENT –38.3% –70.7% –100% 100% 70.7% 38.3% PHASE 2 CURRENT –38.3% –70.7% –100% The mixed-decay mode is controlled by the percent fast decay voltage (V age at the PFD input is greater ...
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A3967 Terminal List Terminal Name Terminal Description REF Gm reference input RC Analog input for fi xed offtime – bridge 2 2 SLEEP Logic input OUT H bridge 2 output B 2B LOAD SUPPLY V , the load supply for ...
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A3967 15.40±0. 24X 0.10 C 0.41 ±0.10 1.27 For reference only Pins 6 and 7, and 18 and 19 internally fused Dimensions in millimeters (Reference JEDEC MS-013 AD) Dimensions exclusive of mold flash, gate burrs, and ...